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Respiratory function deterioration is not time-linked with upper-limb onset in amyotrophic lateral sclerosis
J Martí-Fàbregas1, M Dourado, J Sanchis
1Department of Neurology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain.
Acta Neurologica Scandinavica
|September 1, 1995
Summary
Respiratory function decline in amyotrophic lateral sclerosis (ALS) does not appear to be accelerated by upper-limb onset. This study found no significant differences in pulmonary function or survival based on symptom origin in ALS patients.
Area of Science:
- Neurology
- Pulmonology
- Clinical Research
Background:
- Amyotrophic lateral sclerosis (ALS) progression can vary based on the initial site of symptoms.
- Understanding symptom spread patterns is crucial for predicting disease trajectory.
Purpose of the Study:
- To investigate if respiratory function deterioration is earlier or more severe in ALS patients with upper-limb onset compared to other onset types.
- To analyze the impact of symptom onset location on pulmonary function and survival in ALS.
Main Methods:
- Pulmonary function tests (PFTs) were conducted at diagnosis in 49 ALS patients.
- Forced vital capacity (FVC) decline and time to reach 80% predicted FVC were analyzed longitudinally.
- Survival rates were compared based on the site of ALS onset.
Main Results:
- No significant differences in PFT results were observed between upper-limb onset and other onset groups.
- Longitudinal analysis showed no accelerated respiratory decline linked to upper-limb onset.
- Survival analysis did not reveal significant differences based on the initial site of ALS symptoms.
Conclusions:
- Respiratory function deterioration in ALS is not demonstrably time-linked to upper-limb onset.
- The site of symptom onset does not appear to significantly influence pulmonary function decline or survival in ALS patients.